Java Connection Pooling With Data Sources

public static DataSource setupDataSource(String connectURI,String uName,String pass) {
        ObjectPool connectionPool = new GenericObjectPool(null);
        ConnectionFactory connectionFactory = new DriverManagerConnectionFactory(connectURI,uName, pass);
        PoolableConnectionFactory poolableConnectionFactory = new PoolableConnectionFactory(connectionFactory,connectionPool,null,null,false,true);
        PoolingDataSource dataSource = new PoolingDataSource(connectionPool);
        return dataSource;
}


This will create Connection Pooling with DataSources
you can call this method as 


 DataSource dataSource = setupDataSource("jdbc:mysql://localhost:3306/testdb","root","root");
Connection conn =  dataSource.getConnection();
// any db operation;
conn.Close();


and perform any database operation, one thing must keep in your mind i.e. you must have to close connection which will return your connection to current data sources connection pool.